Binder and preparation method thereof, and separator, electrode assembly, battery cell, battery, and electric apparatus
AssigneeContemporary Amperex Technology Co., Limited
InventorsLei LI, Haiyi HONG, Xiaonan CHENG, Jianrui YANG, Haiyang KANG, Yi ZHENG, Chengdong SUN
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Abstract
This application relates to the field of battery technologies, and in particular, to a binder and a preparation method thereof, and a separator, electrode assembly, battery cell, battery, and electric apparatus containing such binder. The binder includes a core layer structure and a shell layer structure provided on a surface of the core layer structure, where the core layer structure includes a polyacrylate polymer, and the shell layer structure includes a polyvinylidene fluoride polymer.
Claims19
A binder, wherein the binder comprises a core layer structure and a shell layer structure provided on a surface of the core layer structure, the core layer structure comprising a polyacrylate polymer, and the shell layer structure comprising a polyvinylidene fluoride polymer.
A preparation method of binder, comprising:
- mixing and stirring water, an emulsifier, an initiator, and constituent monomers of a polyacrylate polymer and heating for reaction to obtain a core-layer seed emulsion;
- and
- putting water, an emulsifier, an initiator, and constituent monomers of a polyvinylidene fluoride polymer into the core-layer seed emulsion, stirring, and heating under a reaction pressure for polymerization reaction, to obtain a core-shell-structured binder.
Dependencies are inferred from the claim text.